<!DOCTYPE html>
<html lang="en">
	<head>
		<meta charset="UTF-8">
		<title>Document</title>
	</head>
	<body>
		
		<div id="box">box</div>
		<ul>
			<li></li>
			<li></li>
			<li></li>
		</ul>

	</body>
</html>
<script src="jquery.js"></script>
<script>
	// console.log($('#box'));
	// console.log($("li"));







</script>